CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net Income	$ 290.1	$ 245.7	$ 187.2
Other comprehensive income:
Foreign currency translation adjustment	(64.4)	11.5	18.5
Unrealized gain (loss) on interest rate swaps:
Unrealized loss arising during the period, net of tax benefit of $0.1,$0.3 and $2.1 respectively	(0.2)	(0.4)	(3.2)
Reclassification adjustment for loss included in floor plan interest expense, net of tax provision of $3.2, $2.9, $2.8, respectively	4.9	4.4	4.2
Unrealized gain (loss) on interest rate swaps, net of tax	4.7	4.0	1.0
Other adjustments to comprehensive income, net	(6.5)	3.4	(1.9)
Other comprehensive income (loss), net of taxes	(66.2)	18.9	17.6
Comprehensive income	223.9	264.6	204.8
Less: Comprehensive income attributable to non-controlling interests	2.1	2.0	1.9
Comprehensive income attributable to Penske Automotive Group common stockholders	$ 221.8	$ 262.6	$ 202.9